Tillage Effects on Corn Soil-plant-water Continuum in Alfisols of Southern Ohio

Kahlon, M. S.; Fausey, Norman R.; Lal, R.

doi:10.5539/jas.v4n10p35

Cited by 6 publications

(5 citation statements)

References 44 publications

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“…In particular, for clayey red soil in the humid sub-tropical region, DP and CT treatments increased soil water content in the severe drought treatments: they were helpful in relieving drought stress impacts on the maize crop in favour of maintaining yield. This result is inconsistent with that in semi-arid soils, where shallow-till or NT rather than deep-till has been reported to increase soil moisture (Castellini & Ventrella 2012;Kahlon et al 2012). Nevertheless, this result has been supported in recent studies.…”

Section: Discussioncontrasting

confidence: 79%

Maize root morphology responses to soil penetration resistance related to tillage and drought in a clayey soil

Lin

Chen

2017

J. Agric. Sci.

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SUMMARYCrops often experience combined soil stresses. Root responses to soil penetration resistance (PR) and drought stress can be an important basis for crop management. In 2013/14, a 2-year experiment was conducted to evaluate the effect of tillage treatment and drought stress (no irrigation for 4, 12 and 20 days during the V10–V16 growth stage) on the root length, diameter, cortex and cortical cell, and grain yield of maize (Zea mays L.) in a clayey red soil in southern China. Total root length and average root diameter were significantly correlated with soil PR and moisture. The cortical cell file number increased with soil PR and drought stress, while cortical cell size increased only with soil PR. Soil PR and moisture played different roles in maize root morphology modifications, but were both affected by tillage practices. Deep ploughing and conventional tillage increased soil moisture under severe drought stress conditions, whereas soil compaction and no-till significantly increased soil PR. The results indicate that high PR in clayey red soil was responsible for a decrease in maize root size and grain yield under drought conditions.

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Section: Discussioncontrasting

confidence: 79%

Maize root morphology responses to soil penetration resistance related to tillage and drought in a clayey soil

Lin

Chen

2017

J. Agric. Sci.

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“…On the contrary, no-till (NT) significantly decreased θ. However, this result is inconsistent with some reports in arid and semi-arid regions (Kahlon et al, 2012;Aziz et al, 2013;TerAvest et al, 2015). Salem et al (2015) reported that the highest soil θ was recorded under no-till in central Spain.…”

Section: Discussioncontrasting

confidence: 62%

Effects of tillage alteration on soil water content, maize crop water potential and grain yield under subtropical humid climate conditions

Chen

2021

Int. Agrophys.

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Ab s t r a c t. Seasonal drought stress is common in farmland even under humid climate conditions. Low soil water content and high penetration resistance in clayey soil are both factors that limit crop growth, which is significantly affected by tillage. In a twoyear (2014)(2015) field experiment conducted in Hubei, China, the effects of conventional tillage, along with occasional deep tillage and no-till, on the soil water content and penetration resistance values of red soil and on the crop water potentials of the maize crop (Zea mays L.) were tested. Compared to conventional tillage, deep tillage reduced the difference in the soil water characteristic curve between 0-40 cm soil layers, resulting in a more loose and homogeneous topsoil. The deep tillage significantly (p<0.05) decreased soil penetration resistance, increased soil-available water content and soil water content during the dry period, promoted an increase in maize root density by 11.4~31.6%, and increased the water potential of the maize root and leaf during most growth stages. In contrast, the effect of no-till was opposite to that of deep tillage, reducing maize grain yield by 25.3~26.3%. The results confirmed that no-till is not appropriate for the clayey red soil but rather that tillage is needed. This suggests that occasional deep tillage is helpful in mitigating seasonal crop drought stress under the conditions of a humid climate.

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“…Soil disturbance and tillage frequency decreases volumetric water content (Hussain et al, 1998). As in this study, the increase in soil moisture with depth was also reported by Dao (1993); Kahlon et al (2012); Kebede and Bekelle (2008).…”

Section: Discussionsupporting

confidence: 62%

Effect of tillage practices on least limiting water range in Northwest India

Kahlon¹,

Chawla²

2017

International Agrophysics

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A b s t r a c t. Tillage practices affect mechanical and hydrological characteristics of soil and subsequently the least limiting water range. This quality indicator under the wheat-maize system of northwest India has not been studied yet. The treatments included four tillage modes, namely conventional tillage, no-tillage without residue, no-tillage with residue, and deep tillage as well as three irrigation regimes based on the irrigation water and pan evaporation ratio i.e. 1.2, 0.9, and 0.6. The experiment was conducted in a split plot design with three replications. At the end of cropping system, the mean least limiting water range (m 3 m -3 ) was found to be highest in deep tillage (0.26) and lowest in notillage without residue (0.15). The field capacity was a limiting factor for the upper range of the least limiting water range beyond soil bulk density 1.41 Mg m -3 and after that 10% air filled porosity played a major role. However, for the lower range, the permanent wilting point was a critical factor beyond soil bulk density 1.50 Mg m -3 and thereafter, the penetration resistance at 2 MPa becomes a limiting factor. Thus, deep tillage under compaction and no-tillage with residue under water stress is appropriate practice for achieving maximum crop and water productivity.K e y w o r d s: least limiting water range, tillage, maize, wheat, soil moisture, crop productivity INTRODUCTION

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Tillage Effects on Corn Soil-plant-water Continuum in Alfisols of Southern Ohio

Cited by 6 publications

References 44 publications

Maize root morphology responses to soil penetration resistance related to tillage and drought in a clayey soil

Maize root morphology responses to soil penetration resistance related to tillage and drought in a clayey soil

Effects of tillage alteration on soil water content, maize crop water potential and grain yield under subtropical humid climate conditions

Effect of tillage practices on least limiting water range in Northwest India

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